An automated screening production line

Abstract

The utility model discloses an automated screening production line, which is composed of a uniform stacking section, a screening section and an air separation section; the uniform stacking section includes a mixing conveyor, a feeding conveyor arranged on the side of the mixing conveyor, a primary conveyor connected to the discharging port of the mixing conveyor, and a secondary conveyor arranged below the discharging bin of the primary conveyor; the screening section includes a circular screen, a receiving conveyor, a running conveyor, a screening discharging conveyor and a tertiary conveyor; each level of the discharging port of the circular screen is correspondingly provided with a receiving conveyor, and the receiving conveyors at the same level of the discharging ports of two circular screens merge the same level of materials with the tertiary conveyor through the running conveyor or the screening discharging conveyor; the air separation section includes an air separation machine, a receiving conveyor, a converging conveyor, a dust removal system and a discharging conveyor. The utility model accurately divides the materials into four different finished products and completes the discharging, effectively reducing the material loss and improving the processing efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of tea processing, and in particular relates to an automatic screening production line for tea. Background Art

[0002] Tea screening is a vital part of the tea processing process. Its core purpose is to achieve a detailed classification of tea quality through accurate grading. This process effectively classifies tea leaves based on their physical properties (such as size, shape and density) and visual characteristics (such as color and gloss) to ensure that each grade of tea can be properly identified and collected.

[0003] In the current screening system, the most widely used is the multi-stage vibrating screen or rotary screen technology, which uses screens of different specifications to perform primary classification of tea. However, the existing screening lines are often unable to achieve multi-level fine classification of tea. This limitation not only affects the stability and consistency of tea quality, but also restricts the precise market positioning of high-end products, thus bringing negative effects on the overall market competitiveness. Summary of the invention

[0004] The utility model aims to provide an automated screening production line to solve the problem that the existing screening system cannot achieve multi-level fine grading of tea leaves.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: an automated screening production line, consisting of a stacking section, a screening section and an air separation section; wherein:

[0006] The stacking section includes a mixing conveyor, multiple loading conveyors arranged on the side of the mixing conveyor, a primary conveyor connected to the discharge port of the mixing conveyor, and a secondary conveyor arranged below the discharge bin of the primary conveyor. The discharge bin is an independent double-channel discharge bin, and a secondary conveyor is arranged below each discharge bin.

[0007] The screening section includes a circular screen, a receiving conveyor, a running conveyor, a screening discharging conveyor and a three-level conveyor. A circular screen is provided at each of the two second-level conveyor discharging ports; a receiving conveyor is provided corresponding to each level of the circular screen discharging port. The receiving conveyors at the same level of the two circular screens discharging ports merge the same level of materials through the running conveyor or the running conveyor and the screening discharging conveyor. Each level of materials is connected to a three-level conveyor.

[0008] The air separation section includes an air separator, a receiving conveyor, a converging conveyor, a dust removal system and a discharging conveyor; each three-stage conveyor is connected to an air separator, and the air separator is provided with multiple discharging ports, the first discharging port is connected to a receiving conveyor; the second discharging port is connected to a receiving conveyor, and a discharging conveyor is provided at the discharging bin of the receiving conveyor; the third discharging port is connected to the dust removal system; the remaining discharging ports are all located above the same receiving conveyor; in each air separator, the discharging ports of the receiving conveyor corresponding to the remaining discharging ports are all arranged above the same converging conveyor.

[0009] Furthermore, in the screening section, both round screens have three-level discharge ports, including:

[0010] The two receiving conveyors corresponding to the first-level discharge port merge the first-level materials through a first-level operating conveyor, and transport them to a third-level conveyor through the receiving conveyor;

[0011] The two receiving conveyors corresponding to the second-level discharge port each merge the secondary materials to the screening discharge conveyor through a secondary operating conveyor, and then convey them to a third-level conveyor through the screening discharge conveyor;

[0012] The two receiving conveyors corresponding to the third-level discharge port merge the three-level materials through a three-level operating conveyor, and transport them to a three-level conveyor via the receiving conveyor.

[0013] Furthermore, in the air separation section, the discharge bin of the receiving conveyor connected to the second discharge port of each air separator is an independent double-channel discharge bin, and a discharge conveyor is provided under each discharge bin.

[0014] Furthermore, a material leveling rod is arranged in the middle of the side guard plates of the feeding conveyor, the first-level conveyor and the second-level conveyor.

[0015] The utility model can accurately classify materials into four different finished products and complete the discharging through the three processing stages of uniform stacking, screening and air separation, thereby effectively reducing material loss and improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the production line process of the utility model. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are now described with reference to the accompanying drawings. It will be understood by those skilled in the art that the following embodiments are only used to illustrate the present invention and should not be considered as limiting the scope of the present invention. If no specific technology, connection relationship or condition is indicated in the embodiments, the technology, connection relationship, condition described in the literature in the field or the product specification is used. If the manufacturer of the materials, instruments or equipment used is not indicated, they are all conventional products that can be purchased.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0020] Combination Figure 1 and Figure 2 As shown, the utility model provides an automatic screening production line, which consists of a stacking section, a screening section and an air separation section;

[0021] The stacking section includes a mixing conveyor 1, multiple loading conveyors 2 arranged on the side of the mixing conveyor 1 for conveying materials to the mixing conveyor 1, a primary conveyor 3 connected to the discharge port of the mixing conveyor 1, and a secondary conveyor 4 arranged below the discharge bin of the primary conveyor 3. The discharge bin is an independent double-channel discharge bin, and a secondary conveyor 4 is arranged below each discharge bin; a material leveling rod is arranged in the middle of the side guard plates of the loading conveyor 2, the primary conveyor 3 and the secondary conveyor 4; the discharge port of the loading conveyor 2 is arranged in an oblique step type, and a number of loading and lifting conveyors can be arranged according to the type of assembled materials; the two discharge bin channels of the primary conveyor 3 are long and the bifurcation angle of the material port is large; the two secondary conveyors 4 are symmetrically distributed and convey in opposite directions;

[0022] The screening section includes a circular screen 5, a receiving conveyor, a running conveyor, a screening discharging conveyor 6 and a three-level conveyor 7. A circular screen 5 is provided at each discharging port of the two two-level conveyors 4; a receiving conveyor is provided corresponding to each level of the discharging port of the circular screen 5. The receiving conveyors at the same level of the discharging ports of the two circular screens 5 merge the same level of materials through the running conveyor or the running conveyor and the screening discharging conveyor 6. Each level of materials is connected to a three-level conveyor 7;

[0023] The air separation section includes an air separator 8, a receiving conveyor, a converging conveyor 9, a dust removal system 10 and a discharging conveyor 11; each three-stage conveyor 7 is connected to an air separator 8, and the air separator 8 is provided with a plurality of discharging ports, the first discharging port is connected to a receiving conveyor for discharging large foreign objects such as stones and tea stems; the second discharging port is connected to a receiving conveyor, and a discharging conveyor 11 is provided at the discharging bin of the receiving conveyor; the third discharging port is connected to the dust removal system 10, and the dust removal system generates negative pressure to extract and collect light fine particles such as dust in the tea leaves; the remaining discharging ports are all located above the same receiving conveyor; in each air separator 8, the receiving conveyor discharging ports corresponding to the remaining discharging ports are all arranged above the same converging conveyor 9, and the tea leaves coming out of the converging conveyor 9 are No. 1 finished tea leaves.

[0024] To further optimize the solution, in the screening section, both round screen machines 5 have three-level discharge ports, including:

[0025] The two receiving conveyors corresponding to the first-stage discharge port merge the first-stage materials through a first-stage running conveyor 12, and convey them to a third-stage conveyor 7 through the receiving conveyor; after the air separation section, the second finished tea leaves are conveyed out of the discharge bin of the receiving conveyor of the second discharge port of the air separator 8;

[0026] The two receiving conveyors corresponding to the second-stage discharge port each merge the second-stage materials to the screening discharge conveyor 6 through a second-stage running conveyor 13, and then convey them to a third-stage conveyor 7 through the screening discharge conveyor 6; after the air separation section, the third-stage finished tea leaves are conveyed out of the discharge bin of the receiving conveyor of the second discharge port of the air separator 8;

[0027] The two receiving conveyors corresponding to the third-level discharge port merge the three-level materials through a three-level operating conveyor 14, and transport them to a three-level conveyor 7 via the receiving conveyor; after passing through the air separation section, the No. 4 finished tea is transported out of the discharge bin of the receiving conveyor of the second discharge port of the air separator 8.

[0028] According to a further optimization scheme, in the air separation section, the discharge bin of the receiving conveyor connected to the second discharge port of each air separator 8 is an independent double-channel discharge bin, and a discharge conveyor 11 is provided under each discharge bin.

[0029] At the start-up stage of the production line, the prepared materials will be sent to the material mixing section, lifted to the mixing conveyor through several feeding conveyors, and evenly spread on the mixing conveyor belt to achieve full mixing and blending of the materials; after that, the first-level conveyor divides the blended materials into two paths, and enters the screening section through the second-level conveyor; in the screening section, the circular screen machine divides the tea leaves into five grades according to their length or size. The three discharge ports on the top of the circular screen machine are respectively connected to a receiving conveyor, and the tea leaves are transported to the mixing conveyor belt. After being collected by the conveyor, the tea leaves are transported to the air separation section by the three-stage conveyor; the round screen machine screens out the tea dust, dust, etc. in the tea leaves; the air separation section uses an air separator, which is equipped with an electromagnetic vibrating feeder and a dust removal system. Of course, the dust removal system can also be selected in the pile-leveling section and the screening section; the air separator can be set with 4-7 discharge ports to remove impurities such as stones, tea fruits, and tea stems in the material, and a cyclone dust collector or a pulse bag dust collector is used to remove light impurities such as tea dust, dust, and short silk hair mixed in the tea leaves. Through this series of fine processing, the utility model can accurately classify the materials into four different finished products and complete the discharge.

[0030] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automated screening production line, characterized in that: It consists of a stacking section, a screening section and an air separation section; The stacking section comprises a mixing conveyor (1), a plurality of feeding conveyors (2) arranged on the side of the mixing conveyor (1), a primary conveyor (3) connected to the discharge port of the mixing conveyor (1), and a secondary conveyor (4) arranged below the discharge bin of the primary conveyor (3), wherein the discharge bin is an independent double-channel discharge bin, and a secondary conveyor (4) is arranged below each discharge bin; The screening section comprises a circular screen (5), a receiving conveyor, a running conveyor, a screening discharge conveyor (6) and a three-stage conveyor (7). A circular screen (5) is provided at each discharge port of the two second-stage conveyors (4); a receiving conveyor is provided corresponding to each discharge port of the circular screen (5); the receiving conveyors at the discharge ports of the same stage of the two circular screens (5) merge the materials of the same stage through the running conveyor or the running conveyor and the screening discharge conveyor (6); and each stage of the materials is connected to a three-stage conveyor (7); The air separation section comprises an air separator (8), a receiving conveyor, a converging conveyor (9), a dust removal system (10) and a discharge conveyor (11); each three-stage conveyor (7) is connected to an air separator (8), and the air separator (8) is provided with a plurality of discharge ports, the first discharge port is connected to an receiving conveyor; the second discharge port is connected to an receiving conveyor, and a discharge conveyor (11) is provided at a discharge bin of the receiving conveyor; the third discharge port is connected to the dust removal system (10); the remaining discharge ports are all located above the same receiving conveyor; in each air separator (8), the receiving conveyor discharge ports corresponding to the remaining discharge ports are all arranged above the same converging conveyor (9).

2. The automated screening production line according to claim 1, characterized in that: In the screening section, both circular screen machines (5) have three-level discharge ports, including: Two receiving conveyors corresponding to the first-stage discharge port merge the first-stage materials through a first-stage operating conveyor (12), and convey the first-stage materials to a third-stage conveyor (7) via the receiving conveyors; The two receiving conveyors corresponding to the second-stage discharge port each combine the second-stage materials to the screening discharge conveyor (6) through a second-stage operating conveyor (13), and then convey the second-stage materials to a third-stage conveyor (7) via the screening discharge conveyor (6); The two receiving conveyors corresponding to the third-level discharge port combine the three-level materials through a three-level operating conveyor (14), and transport the materials to a three-level conveyor (7) via the receiving conveyors.

3. An automated screening production line according to claim 1 or 2, characterized in that: In the air separation section, the material receiving conveyor discharge bin connected to the second discharge port of each air separator (8) is an independent double-channel discharge bin, and a discharge conveyor (11) is arranged under each discharge bin.

4. An automated screening production line according to claim 1 or 2, characterized in that: A material leveling rod is arranged in the middle of the side guard plates of the loading conveyor (2), the first-level conveyor (3) and the second-level conveyor (4).

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